RAK3172 RAK | Alldatasheet
Document overview
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- PDF pages: 9
Technical content
Features
LoRaWAN 1.0.3 specification compliant Supported bands: EU433, CN470, IN865, EU868, AU915, US915, KR920, RU864, and AS923-1/2/3/4 LoRaWAN activation via OTAA/ABP LoRa Point-to-Point (P2P) communication Custom firmware using Arduino via RUI3 API Easy to use AT command set via UART interface Long-range - greater than 15 km with optimized antenna ARM Cortex-M4 32-bit 256 kbytes flash memory with ECC 64 kbytes RAM Ultra-low-power consumption of 1.69 μA in sleep mode Supply Voltage: 2.0 V ~ 3.6 V Temperature Range: RAK3172: -20° C ~ 85° C RAK3172-T: -40° C ~ 85° C 📝 NOTE: There are two certification variants available for the RAK3172 Module: (1) with the CE & UKCA Certification Mark and (2) with FCC, IC, & RCM Certification Mark. If you need LoRa module with BLE 5.0 capability, you can check RAK11720 which is pin-to-pin compatible to RAK3172 with extra pins for additional ground and BLE RF antenna port. ⚠ WARNING Temperature ratings: RAK3172 is -20° C to 85° C RAK3172-T is -40° C to 85° C Specifications
This section covers the hardware and software specifications of RAK3172. Also, it includes the block diagram and the updated firmware link of the RAK3172 WisDuo module. Overview Block Diagram Figure 1: RAK3172 System Block Diagram Hardware The hardware specification discusses the interfaces, pinouts and its corresponding functions and diagrams. It also covers the parameters of both RAK3172 modules in terms of RF, electrical, mechanical, and operating characteristics. Interfaces Module Interfaces Sub-GHz SPI interface A dedicated internal SPI interface called SUBGHZSPI is used to communicate with the RF subsystem of the STM32WLE5CCU6. Pin Definition RAK3172 UART2/LPUART1, UART1
Figure 2: Board Pinout for RAK3172 ⚠ WARNING When using RF pin for antenna connection and not the IPEX connector variant, make sure there is no ground plane (in all layers of the PCB) under the RF trace path to eliminate the possible effects of unwanted stray capacitance which can cause degradation of the RF signal levels. Pin No. Name Type Description
1 PA3/UART2_RX I Reserved - UART2/LPUART1 Interface (AT Commands and FW
Update)
2 PA2/UART2_TX O Reserved - UART2/LPUART1 Interface (AT Commands and FW
Update)
3 PA15/PIN_A4 I/O GPIO and ADC
4 PB6/UART1_TX O UART1 Interface
5 PB7/UART1_RX I UART1 Interface
6 PA1 I/O GPIO only
7 PA13/SWDIO Reserved - SWD debug pin (SWDIO)
8 PA14/SWCLK Reserved - SWD debug pin (SWCLK)
9 PA12/I2C_SCL I/O GPIO and I2C (SCL)
10 PA11/I2C_SDA I/O GPIO and I2C (SDA)
No. Name Type Description RF Characteristics
11 GND Ground connections
12 RF RF Port (only available on RAK3172 No-IPEX connector
variant)
13 PA7/SPI1_MOSII/O GPIO and SPI (MOSI)
14 PA6/SPI1_MISOI/O GPIO and SPI (MISO)
15 PA5/SPI1_CLK I/O GPIO and SPI (CLK)
16 PA4/SPI1_NSS I/O GPIO and SPI (NSS)
17 GND Ground connections
18 GND Ground connections
19 PA8 I/O GPIO only
20 PA9 I/O GPIO only
21 BOOT0 Boot0 mode enable pin - high active
22 RST MCU Reset (NRST)
23 GND Ground connections
24 VDD VDD - Voltage Supply
25 PA10/PIN_A3 I/O GPIO and ADC
26 PB2/PIN_A2 I/O GPIO and ADC
27 PB12 I/O 10 kΩ internally pulled-up for high freq variant or pulled-down
28 GND Ground connections
29 PA0 I/O GPIO only
30 PB5 I/O GPIO only
31 PB4/PIN_A1 I/O GPIO and ADC
32 PB3/PIN_A0 I/O GPIO and ADC
The RAK3172 supports two different frequency variations: RAK3172(L) Low Radio Frequency and RAK3172(H) High Radio Frequency. 📝 NOTE: Performance test and evaluation of RAK3172-T (with TXCO), can be found on the RAK3172-T TCXO Verification Report ) Operating Frequencies Module Region Frequency
Electrical Characteristics
Feature Minimum Typical Maximum Unit Operating Current Feature Condition Minimum Typical Maximum Unit Sleep Current Feature Condition Minimum (2.1 V)Typical (3.3 V) Maximum Unit RAK3172(L) Europe EU433 China CN470 RAK3172(H) Europe EU868 North America US915 Australia AU915 Korea KR920 Asia AS923-1/2/3/4 India IN865 Russia RU864 VCC 2.0 3.3 3.6 Volts (V) Operating Current TX Mode 87 (@ 20 dBm 868 Mhz) mA RX Mode 5.22 mA Current ConsumptionEU868 - 1.69 - μA
Feature Condition Minimum (2.1 V)Typical (3.3 V) Maximum Unit 📝 NOTE: For the reference application schematic of RAK3172 with minimum components requirements, refer to the RAK3272S Breakout Board Datasheet. Mechanical Characteristics Module Dimensions Figure 3: RAK3172 Physical Dimension Layout Recommendation US915 - 1.69 - μA CN470 - 1.69 - μA
Pre-heating Ramp (A) (Initial temperature: 150° C): 1~2.5° C/sec Soaking Time (T2) (150~180° C): 60~100 sec Peak Temperature (G): 230~250° C Reflow Time (T3) (>220° C): 30~60 sec Ramp-up Rate (B): 0~2.5° C/sec Ramp-down Rate (C): 1~3° C/sec Software Download the latest RAK3172 WisDuo LPWAN Module firmware provided below. RAK3172(L) and RAK3172(H) use the same firmware and it will automatically detect the variant of the module being used. The bin file contains the application code only and you need the RAK DFU Tool to upload this file to the module. The hex file contains both the bootloader and the application code. You need to use STM32CubeProgrammer to upload this. ⚠ WARNING Uploading the .hex file via STM32CubeProgrammer will erase all configured data on the device. RAK3172 uses UART2 serial pins to upload the latest firmware. 📝 NOTE: RAK3172 should automatically go to BOOT mode when the firmware is uploaded via RAK DFU Tool or WisToolBox. If BOOT mode is not initiated, you can manually send AT+BOOT command to start bootloader mode. Firmware / OS ⚠ WARNING There are RAK3172 devices loaded with old firmware versions which are not based on RUI3 (RAKwireless Unified Interface V3). These devices have v1.0.4 and below. If the host microcontroller code is based on this old firmware, we have a RAK3172 AT Command migration guide that explain in detail the few differences between the two AT commands set. Model Version Source RAK3172 (.bin) RUI3 Application Code only (default baudrate = 115200)Download RAK3172 (.hex) RUI3 Bootloader and Application Code(default baudrate = 115200)Download RAK3172-T (.bin)RUI3 Application Code only(default baudrate = 115200)Download RAK3172-T (.hex)RUI3 Bootloader and Application Code (default baudrate = 115200)Download RAK3172 (OLD) DEPRECATED V1.0.4 (default baudrate = 9600) Download
Last Updated: 10/10/2023, 11:31:53 PM